Sector 139: Upon first sight of the bridge (see screenshots below), turn right into the nukage to find an alcove containing a radiation suit. 'Use' the back wall, and it will lower to reveal a green armor.

Sector 161: After crossing the bridge, go in to the short tunnel at the end of the area, containing a medikit. Go outside into the nukage area, and follow it round to a teleporter. You will be taken to an area containing a soulsphere.

Sector 465: There is a small room like a squashed hexagon, due north of the main building's entrance courtyard. The wall on the south-west side features an open panel with flickering light revealing exposed red wires or pipes. Take the nearby lift to reach the vantage point of the windows that surround this room, and shoot this panel. Then move to the west, and jump down a hole in the wall to the south. You arrive on a platform overlooking the nukage pool, and at the western end of the platform a teleport pad is now accessible. It leads to the wilderness north of the base. Note that getting back into the base will expose you to a massive teleportation-based ambush.